In 1998, in a now-famous paper, molecular biologist Dennis Lo showed that cell-free fetal DNA is present in high concentrations in maternal plasma and serum. The finding has led to an explosive science based on cell free DNA and an industry that we all know as non-invasive prenatal testing. But more and more this science is making itself known in other disease areas, such as cancer, as well.

Specifically, ctDNA is offering higher resolution in cancer treatment.